Unformatted text preview: luded with the documentation. The code cannot be exported. Of course, U.S. government laws don’t apply outside the United States, and some people have ignored the export rules. RIPEM code is available on bulletin boards worldwide. Something called RIPEM/SIG, which only does digital signatures, is exportable. At this writing, RIPEM is not a complete implementation of the PEM protocols; it does not implement certificates for authenticating keys. Before writing RIPEM, Riordan wrote a similar program called RPEM. This was intended to be a public-domain electronic-mail encryption program. To try to avoid patent issues, Riordan used Rabin’s algorithm (see Section 19.5). Public Key Partners claimed that their patents were broad enough to cover all of public-key cryptography and threatened to sue; Riordan stopped distributing the program. RPEM isn’t really used anymore. It is not compatible with RIPEM. Since RIPEM can be used with the full blessing of Public Key Partners, there is no reason to use RPEM instead. Previous Table of Contents Next Products | Contact Us | About Us | Privacy | Ad Info | Home Use of this site is subject to certain Terms & Conditions, Copyright © 1996-2000 EarthWeb Inc. All rights reserved. Reproduction whole or in part in any form or medium without express written permission of EarthWeb is prohibited. Read EarthWeb's privacy statement. To access the contents, click the chapter and section titles. Applied Cryptography, Second Edition: Protocols, Algorthms, and Source Code in C (cloth)
Brief Full Advanced Search Search Tips (Publisher: John Wiley & Sons, Inc.) Author(s): Bruce Schneier ISBN: 0471128457 Publication Date: 01/01/96 Search this book:
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----------- 24.11 Message Security Protocol (MSP)
The Message Security Protocol (MSP) is the military equivalent of PEM. It was developed by the NSA in the late 1980s under the Secure Data Network System (SDNS) program. It is an X.400-compatible a...
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